His hips bucked forward to meet her hand. "Probably a good idea," he agreed, voice a bit breathy. "And," he added as she unzipped his pants, "we should probably get you out of these - " he let his finger slip under her undergarment " - if we want to have any sort of fun. You can leave the dress on, though."
For some reason, he really found it unbearably hot if she stayed in her dress. Not that he didn't like her naked, but for now? He would totally like the dress.